I used Attio for my personal CRM. It's absolutely fantastic! It's easy to use, and it has one of the coolest UI ever. I truly reccomend this product to freelance like me, because it's very very simple to use (and to learn).
I think that it is a game changer for CRM: it has also incredibly powerful features.
I'm trying to contact the HR team of Attio: I want to work with them, absolutely.